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If you wish to see an idealized version (without the
influen= ce of the solar wind), you can use Celestia
with the magnetic field add-= on.  The basic program
can be found at http://www.shatters.net/cele= stia
and the addon at http://www.celestiamotherlode.com. 
There are= a couple of tweaks to the add-on that
allow you to show (or not) variou= s field lines and
particle pathways.

Regards,
Eric Pyle
<br= > ---- Original message ----

  Date: = Tue, 4 Mar 2008 12:13:30 -0800
  From: Tom-Pierre Frappé <t= [log in to unmask]>
  Subject: good visualizations of the Eart= h's
  magnetic field?
  To: [log in to unmask]
  >Hi = all,
  >
  >I am teaching an online course ( university
  level, 3= rd year). My
  >students are having a lot of difficulty
  visualizin= g the geomagnetic
  >field, and making sense of how the declination  /inclination changes
  >spatially.
  >
  >Does anyone knows= of good online visualization
  for the magnetic field of
  >the Eart= h?
  >
  >3D would be best, and interactive simulations
  would b= e ideal, but I
  >might be wishing for the moon... you can email
  me= your suggestions off
  >list, I'll compile them and send a summary= back
  to the list-serve.
  >
  >many thanks for your suggestions= !
  >Tom-Pierre
  >
  >--
  >Tom-Pierre Frappé
  &gt= ;EOS-Science Education Initiative / ECAC &
  EOSC114 Administrator
  = >Dept. Earth and Ocean Sciences
  >University of British Columbia  >6339 Stores Road
  >Vancouver, B.C.
  >V6T 1Z4, Canada<b= r>>
  >Phone:(604)822-3063
  >fax: (604)822-6047
  >tfr= [log in to unmask]
  >
  >